Dual OS - XP & Vista - XP Installed First.

Sony / Vgn-cr24g
March 13, 2010 at 10:41:50
Specs: Windows Pro SP2, Intel Core 2 Duo CPU T7250 @ 2.00GHz, 2.49 GB of Ram
I already have XP installed in my system. I need to install Vista. I have 2 Partitions. C Drive and D Drive. D is filled with important Datas. But I have 58 GB Free space in C drive. I need to install Vista in my C Drive with existing OS XP. I need to install dual OS. Coz I always work in XP as Vista is very slow. But I need Vista for Software Testing. Please could anybody help? Thanks.

See More: Dual OS - XP & Vista - XP Installed First.

March 13, 2010 at 11:29:55
Maybe you could get an external HDD and move your data to the new drive. It would be better anyhow to back up your important stuff to another drive in case of a crash. Then install Vista on the D drive, I wouldn't recommend installing two OS's on the same partition. Maybe also look into Microsoft Virtual Machine.

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March 13, 2010 at 13:49:52
You can NOT install Vista on the C: partition, it MUST go on the D: partition. What you're going to have to do is repartition the drive so that you have 3 partitions...C for XP, D for Vista, E for storage.

That can be easily done using EASEUS Partition Master which is available for free:


Here's some screenshots to give you an idea of what you'd be working with:


All you have to do is split the C: partition into 2 parts...you'll have to decide on the size of each. Once they're created, here's the easiest way to setup the dual boot:

- boot into XP as usual
- pop the Vista disc in the drive & wait for it to spin up
- when a screen pops up asking if you want to upgrade (recommended), click 'Advanced' instead, then direct Vista to install onto the new partition that you just created. From there, just continue on as a normal installation...the boot menu will be setup automatically.

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March 14, 2010 at 06:24:37
@ Jam,

Thanks... Now I created a logical partition. Hope i'll install vista now.

@ grasshoper
Thanks for your suggestion. It was a good idea. But I found Jam's suggestion easier.


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